Mechanism for treating ore.



, L s. DWIGHT. v mnmm'sm FOR TREATING ORE.

' APPLIOATIOIIEQHDEQZS, 1907. RENE ED FEB- '1. 191

1,027, O.- "Patented May 21, 912.

Fig.6.

IIV I/ENTOR I ATTORNEY riNrraD saAras? Parana orator.

ARTHUR s. nwreirr, or YORK, N. Y.,ASSIG1\TOR, BY MESNE ASSIGNMENTS, r nwrerrr & morn METALLURGICAL GOMI'ANY, or mossy-om, NEW JERSEY, a

CORPORATION on NEW JERSEY.

Specification of Letters Patent.

MECHANiSM FOR TREATING can.

' Patented May at, rare.

Application filed December 23, 1907, Serial No. 407,869. Renewed-February 17, 1910. Serial No. 544,507.

.To all whom it may concern:

Be it known that I, ARTHUR S. DWIGHT, acitizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Mechanism for Treating Ore, of which the following is a specification, reference being had therein to the accompanying drawing. 10

This invention relates to improvements in apparatus for treating ores, it being particularly intended for the desulfurizing and sintering of oresof the sulfid class.

The'object of the present invention is to provide a mechanism for this purpose which shall be composed of simply constructed elements which can be readily repaired and which can be employed to greater advantage in several respects than can the machines that have been heretofore used for this work. a

Figure 1 is a side elevation of a machine embodying my improvements; Fig. 2 is a side new of one of the pallets or ore receptacles with someof the adjacent partsQalso shown; Fig. 3 is a cross section showing one of the pallets and part of the air suction box.

In these drawings A represents an air suction box upon the upper edges of which are wearing strips B, carefully planed and upon which slide the cast iron palletsD,

the lower edges of which are likewise carefully planed and the vertical edges of which are also planed so as to make airtight joints when the pallets are pushed along the top surface of the box. The pallets carry the grates C which rest upon lugs M .cast on'the inner sides of the pallets. The pallets are each built with transverse members S+S Fig. 2) which form, of:

These lower transverse members serveaS' the lower part 0 the pallet, a four-sided box, while the upper part above the gratehas these transverse members omitted so that the ore charge can be continuous.

partitionstocut oil the air at certain oints.

' Each of these -pallets' may .be'descri ed as an independent or individual car provided with four wheels E attached to the pallet by suitable lugs and soplaced that the centers" of, the axles shall be in a line with the lower edges of the pallets, thus permitting each pallet to move around the curved track upper surface of which is flat and coincident with the plane of the surfaces of strips B, and upon this surface the lower edges .of the pallets will move with an airtight hereinafter described without interference with the other pallets. As the pallets are being pushed across the suctionbox, they are guided by the flanges of the wheels E engaging with the.inner edges ofthe longitudinal tracks F though the treads of the wheels do not rest upon said track, the weight of the pallets being sustained by con. tact at the strips B, as already mentioned. Instead of steering the pallets, by guiding the flanges of the wheels, it may be accomplished also by shaping the lugs carrying the axles of the wheels in such a way that they will fit over the wearing strips along the surfaces B and thus guide the pallets in a straight line while traveling over the suction box.

At each end of the suction box there is arranged an adjustable deadplate G the joint just before they pass in their travel to a position over the suction box and again just after they pass the suction box. These deadplates have a length slightly longer than the length of a pallet, so that there will be no leakage of air during the time that a given pallet is partly over the suction box either entering or leaving. In order to compensate for wear these 'deadlates should be made adjustable, vertically, y slot bolts or otherwise. he pallets-are elevated, one by one, and consecutively placed in position on the rails F by means 0 a pair of sprocket wheels H each of which is so designed that the teeth of the sprocket wheels engage the treads of the wheels E- in conjunction with the guide. rails F which partially encircle the sprockets leaving room between the sprockets and the rails for the wheels to freely pass. The

wheels, the horizontal track Fis' suddenly curved downward with an outer guide rail F concentrically arranged with it leaving the wheels of the pallets may freely pass between them and thus compel the pallets to travel in a circular path at this point, overturning the same to discharge whatever load they may carry atthe bottom of the vertical curve. From the bottom of this curve the track-F leads on an incline to the bottom of the sprocket wheels above mentioned in such a way that the idle pallets resting on the inclined track will feed themselves naturally down tothe point Where the sprockets of the wheels will engage with the wheels of therpallets and carry them consecutively to the upper level.

The suction box is provided with. an outlet J which is connected with the suction side of a centrifugal fan or other suitable apparatus for inducing the necessary draft.

K is the hopper for feeding the ore to the sintering machine, while L represents the gas pipe for ignition or other means which may be employed for the purpose.

The grates are preferably made sectiona and are here shown with three sections to each pallet, but they might also be made with one section to each pallet if it is found convenient to do so. The-grates are preferably made with a rib C to give them strength, or it may be found more convenient to cast transverse partitions or ribs in another upon the upper edge of the suction box are pushed like a train of'cars across it,

the lower or box-like part of the pallet and form the grates as flat plates. resting on the top of these ribs. The grate is here shown as resting on the lugs M and held in place by the short bolts N.

The structure of the machine can be made in any convenient manner. It is .here, shown with the suction box forming the principal member, with its weight resting upon the beam 0, which also carries the bearings of the sprocket wheel and driving pulley and the framework 'R of the discharge rails. This beam is in turn supported by the posts P and P}. The hopper K and the ignitingdevice L may be supported by extensions of this framework or be hung from an independent framework. The power to drive the sprocket wheel may be transmitted to it in any convenient manner. 1 Inthe "drawings a driving device is shown in the form of a pulley and belt. Instead of these use can be made of suitably speeded gear wheels.

The pallets, being, delivered I one after will successivelig. receive their charges of ore from the' hopp passes under the 1gniter L will be i ited and immediately come under the in uence of the air currents entering the suction 'box, and the sintering action in the ore on any particular pallet will continued during the time that the pallet is travelmg the er K. The ore as it curve, which latter carries it to the lower track. In moving around this curve it will turn upside down and discharge its cake of sinter, which action will be assisted by the suddenness of the descent. This, of course, must'be regulated by the proper de sign of the curves and possibly regulating the force of the descent by restraining devices which will. be placed along the line of travel. For instance, friction blocks or impeding devices maybe so placed as to break the shock of the descent and regulate it to the desirable degree. As soon as the pallet has discharged its cake of sinter it is able to run down the inclined track 7 F and take its place in the train of pallets waiting to be picked up and elevated by the sprocket wheels;

There are a number of important advantages incident to a machine of this type when compared with those of the types which. I have previously designed and built solely or jointly with others. The earlier machines having a series of pallets or re-' "ceptacles connected; together 1n a ser1es' either by linking one to the next or by connecting them to chains had incident to them trouble and inconvenience and were liable to wear out rapidly ,even when the movable parts were subjected to a slow motion. In the present case, it is made possible to quickly remove any pallet and repair it or substitute a new one without interfering in a any way with the continuous operation of the machine. All of the parts ofthe present machine are comparatively small in'size and are so designed that they can be. easily constructed in an ordinary foundry or machine shop; I have heretofore constructed machines for this purpose in which the principal element was a large rotary drum or cylinder; and have found that machines of that type can be properly madeonly in machine shops equipped with large tools such as are not available in mine'regions. Again,

the pallets in thepresent construction being independent,- each of the others, they can be moved in such way'as to more thoroufghly effect the detachment and separation-o the sinter. 'When,this is to be done, the pallet can have an accelerated speed, in relation to the rest of the series. Moreover, if desired the track-way can be so constructed at polnt-s immediately preceding the downward curved track that the pallets will be lifted more or less from the-lines of the 11 perhorlzontal portion, which will result rac-' are still over the air box.

t-uring the sinter cake and in loosening it from the grate.

Under some circumstances, I employ a breaking roller W which acts not only to assist in breaking the sinter cake supported by the terminal pallet in the upper horizontal series but also serves toprevent the displacement of the sinter in the pallets which I do not in this case claim a conveying apparatus comprising a movable, open, trough-like carrier for transporting loose material, formed ofa series of independent,

disconnected elements arranged to be brought together end to end, and means for 1 tacles past the air-forcing mechanism, a sup taking the said elements one at a time from the discharge end of the said series and transporting them to the feed end thereof;

nor the combination of such a conveying apparatus with means for feeding material thereto and means for causing a discharge or emptying of the individual conveying elements, as such subjects-matter are claimed in my co-pending case designated as appli cation No. 558,621, filed April 30, 1910.

What I claim is: p 1. In an apparatus 'for treating ore, a series of ore receptacles, movable succes sively through the region where the ore is treated, means for returnin them independently of each other .to their initial point 1 of travel and means for delivering an orclets or ore receptacles, a guide-way along treating gaseous fluid to the ore while supported by the said receptacles, substantially as set forth.

2. In a mechanism for treating ore, the combination with a series of. independent palletsor ore receptacles, of means for advancing them through the region where the ore is treated, means for delivering a gaseous fluid to the ore while being advanced through the said ore-treating region, a guide-way along which the said vanced along the return guideway, substantially as set forth.

3. In an apparatus for treating ore, the combination of a series of independent palwhich they travel in one direction during the time the ore is. being treated, a return -guide-way along which they travel in the opposite direction, means for carrying them fromone of the said guideways to the other, andmeans for delivering to the ore while the pallets are moving along. the first mentioned guide way a combustion-supporting gaseous fluid, substantially as set F orth. 4. Inan apparatus for treating ore, -a

.series of independent pallets or ore receptacles, a device for controlling the 'm o vement of a current of air used in treating the ore, means for forming an air-tight clopallets or' -receptaclesreturn toward. the point where surefor the pallets or receptacles as they travel through the region where the ore is treated, supporting mechanism for the pallets or ore receptacles adapted to permit them to be discharged while supported thereon after they have traveled through the region where the ore is treated,-and means for returning them from the delivery end back to the initial end of the region where the ore is treated, substantially as set forth. 5. In. an apparatus for treating ore, the combination of a series of pallets or ore re- .ceptacles, each independent of the others,

air forcing mechanism, means .for advancing a series of the said pallets or ore recep- 0 port or guide-way for the pallets along I which they successively move at a relatively high speed after separating from the said series, and means for restoring them from 35 the said guide-way or support to the series passing the said air mechanism, substantially as set forth.

' 6. In an apparatus for treating ore, the combination of a series of independent pal- '90 lets or ore receptacles, means for supplying onto them successively, air forcing mecha-- nism, means for advancing a series of said pallets from the ore supplying'devices past the air forcing mechanism at a relatively slow .spe ed, means for supporting the pallets or receptacles and adapted to permit them to move toward the ore supplying de- Vices at'a relatively high speed, and means for restoring them in posltion in relation to the ore supplying mechanism, substantially as set forth.

7. In a; mechanism for treating ores, the combination of a series of independent pallets or ore receptacles, air-moving mechanism, a'guideway having a part adjacent to the air-moving mechanism along which the pallets move, and another part at a different level from that of the part first mentioned, and inclined portions uniting the said two parts, and means for elevating the individual pallets from one part of the guideway to the other along one of the inclined'port-ions, the pallets belng arranged to travel down the other inclined portion by gravity. 8. .In an apparatus for continuously treating material, a series of independent disconnected carrying elements, a trackway for supporting the said carrying elements in anend to end series while they aremoving through the region where the material is to be treated, means by which the material on the trackway is subjected to moving cur rents of air as the, carrying elements travel along the trackway, means for causing a 126'. discharge of the carriers after thematerial has been treated, and means for returning thesaid individual carriers to the head of the apparatus.

a series of independent'disconnected carrying elements, a guideway along which said carriers travel in an end to end series, means for successively charging the carriers, means for causing air to pass through the material upon the carriers while passing along the said guideway, means for causing the carriers to successlvely dlsc-harge after the ma- -terial has been treated, and means for returning the individual carriers after having discharged to the head of the apparatus.

10. In an apparatus for treating ore, a series of independent disconnected ore carrying elements, movable successively through the region where theore is treated, means by which the material in the said conveying elements is subjected to moving currents of air while passing the said region of travel, and

means for returning the said elements independently one of the other to their initial point of travel for entering the aforesaid region, substantially as setforth.

11. In an apparatus for treating ore, a sei ries of independent disconnected carryingelements, a guideway along which the said elements travel in an end to end series, means for moving the carryingelements in series al'ongthe guideway, means for subjecting the material in the. carrying elements to moving currents of air while the carrying elements are arranged in series, means for separating the'said elements one at a time from the series at the leading'end thereof and causing them to discharge their contents, and means fordirecting the empty carrying elements individually back to the initial end of the said series, substantially as set forth.

12. In an apparatus for treating ore, a se-' ries of independentcarrying elements, a guldeway along which the elements travel 1n an end to 'end series, means for moving the carrying elements along :said guideway at aaelatively slow speed, means for conducting air situated adjacent to the said guideway and arranged to causethe mate rial conveyed by the said carrying elements to be subjected to moving currents of air,

means for forming substantially air tight closures between the individual carrying elefrom the leading end of the series one at a time, means for directing the individual carrying elements from the discharge end of the apparatus to the feed end thereof, means for allowing the said carrying elements to collect at the feed end of the apparatus before being delivered to the series movable along the said guideway, and means for causing moving currents of air to pass through-the material being carried, substantially as set forth.

14. In an apparatus for treating ore, a series of vindependent disconnected carrying elements each having side walls the edges and the ends of which are smooth, and having also a perforated support for materlal located between the side walls, a guideway along which the said carrying elements travel in an end to end series, with the ends of the side walls of contiguous elements in close engagement, the guideway belng smooth and the edges of the side walls of the I carrying elements moving ln engagement therewith, thus forming close oints, returning means for directing the carrylng elements from the discharge to the feed end of the said guideway, and means for causing moving currents of air' to pass through the material carried by the said-carrying elements while moving along the said guideway, substantially as set forth. In testimony whereof I aflix my signature,

in presence of two witnesses.

ARTHUR S.DWIGHT.'

Witnesses:

HENRY JOHN STALITE,

GBACE'ELIZABETH SEYMOUR. 

